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(11) | EP 0 982 559 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Coaxial unfocused optical sensor for dual mode seekers |
| (57) The present invention is directed to an unfocused optical sensor (100) including
a dual mode optical and radio frequency (RF) sensor (218) system for use with a guidance
system of a munition. The inventive system comprises an optical sensor (100) comprising
a plurality of optical detector units (104). The optical detector units (104) each
produce an optical detector output signal upon illumination with optical energy. In
a dual mode embodiment, the sensor may further comprise an optional rf sensor (218)
which produces an rf sensor output signal. In the case of the dual mode sensor (210),
the optical detector units (104) are arranged in an annulus mounted coaxially with
the transreflector (318) and twist reflector (322) about the longitudinal axis of
the munition. The sensor system further comprises a signal processor (248) operably
associated with the optional rf sensor (218) and the optical sensor (100) to receive
the rf sensor and optical detector output signals and provide a guidance signal to
the guidance system. |